fangzhuang2004 / brushless-gimbal

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MPU LPF #17

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago
What steps will reproduce the problem?
1. Use any value other than 0 for MPU LPF

What is the expected output? What do you see instead?

I have constant noise introduced into my system from the motors by what seems 
to be perpetual updating or noise from the loop.  This introduces the tiniest 
vibrations (if you can call them vibrations).  It is not a constant frequency 
vibration, but more like adjustments of noise from the MPU.  I would expect the 
system to find a point where it detects level, and stop adjustments.  
Using a filter on the MPU, I would expect this noise to be "smoothed out" so 
that the system would not be so fast to adjust minor numbers.  When increasing 
the MPU LPF to any number but 0, the gimbal begins to randomly jump around on x 
and y axis.  It gets worse as the numbers increase.  Around 3, the gimbal is 
making completely random movements up to 45 degrees on each axis.  It is 
uncontrollable. 
I realize the feature is "experimental", and I request that this feature gain 
more importance.  I feel it is a valuable feature that can isolate the system 
from other vibration interference as well as smooth out noise in the system.
Thank you!

What version of the product are you using? On what operating system?
r169
Win7 x64

Please provide any additional information below.
Witespy Martinez v3
RCTimer 2212 on roll
iPpower GBM2208 on pitch
GoPro Hero2

Original issue reported on code.google.com by ccp...@gmail.com on 1 Aug 2013 at 12:09